Anything he does, he does with much enthusiasm. He knows the important words - go, eat, play, find, walk. Those words get his tail wagging like crazy. He hates certain words and pretends not to understand - shower, for instance, and stay.
When he's sleepy, he just goes to sleep. When he's hungry, he'll follow you around. When he wants to play, he'll drop a toy at your feet. If you miss the signal, he'll touch your knee or your leg, and stare at you meaningfully. He likes to take us out on walks (because really, we need it more for exercise purposes than he does!).
I like the way he lives his life - eat, drink, play, walk, run, sleep.